SPARTANBURG, S.C. — High-flying high school power forward Zion Williamson has committed to Duke, giving the Blue Devils the nation's three top-rated college prospects.

Williamson is a 6-foot-6, 275-pound forward from Spartanburg who's rated second among high school players by ESPN. He picked Duke on Saturday over Clemson, Kansas, Kentucky, North Carolina and South Carolina.

It was thought in recent weeks that Williamson was focused on his home-state schools of Clemson and South Carolina — the Tigers because they were the first school to heavily recruit Williamson and the Gamecocks because earlier this month they signed former Louisville recruit Brian Bowen Jr.

Zion Williamson.

(Gregory Payan/AP)

Instead, Williamson joined a powerhouse young class that includes top-rated R.J. Barrett and third-rated Cam Reddish — both 6-foot-7 forwards — and point guard Tre Jones, ranked 10th. Those three have signed with Duke.